Jules bois



(No Model.)

J. BOIS. PBRMUTATION LOCK.

.No. 516,467. Patented Mar. 13, 1894.

inventor UNITED STATES PAT NT OFF CE.

JULES 1301s, OF LYONS, FRANCE, ASSIGNOR TO LA socinrn ANoNYMnDE LASERRURE sANs CLEF, OF SAME PLACE.

PERM UTATlON-LOCK.

SPECIFlIGATION forming part of Letters Patent No. 516,467, dated March13, 1894.

Application filed May 7,1892. Serial No. 432,140. (No model.)

To all whom it may concern.-

Be it known that I, J ULES BoIs, a citizen of the Republic of France,residing at Lyons, Department of Rhone, Republic of France,

have invented certain new and useful Im- Icarefully defined in theclaims.

' In order that my invention may be better "understood, I haveillustrated in the accompanying drawings a lock provided with myimprovements, in which- 1 Figure 1 is a front elevation of the lock withthe front plate removed in order to better show the inclosed parts. Fig.2 is atransverse section taken along the line 1-2 in Fig. 1. Fig.

3 is a view similar to Fig. 1, but showing the bolt shot or withdrawn insuch a manner as to permit of opening the lock. Y In the drawings Xrepresents the casing 0 any desired form in which is arranged thelongitudinally movable bolt A, adapted to be shot or'protruded by meansof a coil spring 0, as clearly seen in Fig. 1. The bolt A is providedwith a notch a; with which engages a finger B arranged on the inner endof the knob spindle T as clearly seen. The knobspindle is furtherprovided inside the casing with a spring pawl 0 adapted to engage assaid spindle is turned, with one or the other of a series of tumblers D,each of which is provided about its periphery with a series of teeth andwhich tumblers are prevented from backward rotation by leaf springs f,as seen in Fig. 1. Of the tumblers D any desired number may be employedaccording as it is desired to give the look a greater or less number ofcombinations, but in the drawings I have shown but four. a

It will be seen by inspection of Figs. 1 and 3, that the inner end ofthe spindle is of such a form that it may not be entirely rotated,

but is only capable of partial revolution, and at each of such partialrevolutions of said spindle it will also be seen that the pawl C willengage and partially rotate one of the tumblers D, being held distendedby its spring g, out into the path of said tumblers.

The spindle T is provided either at its inner or outer end, or at bothas seen in Fig.2, with a series of peripheral grooves or notches, M,each of a width substantially equal to the thickness of one of thetumblers D, by means of which notches the said spindle may be set in aposition either more or less far into the casing, whereby the pawl O iscaused to move in the planepf either of such tumblers, as will bereadily understood.

V is an adjustable block or too adapted to be secured to either of theteeth of either of the tumblers D, and in the rotation of the tumbler towhich it is secured, said block strikes against the spring actuatedhammer m whereby as said block passes said hammer, the gong G is struck,giving warning to the operator of the position of the parts of the lock.Each of the tumblers D is further provided with an opening E, whichopenings in the several tumblers are adapted to co-incide whereby arecess is formed for the entry of the tail of the bolt A, as seen inFig. 3.

The lock is provided with a removable cover, as seen in dotted lines inFig. 2, said cover being so constructed that it may only be removed whenthe lock is in its opened position as seen in Fig. 3, and that when thebolt is shot as in Fig. 1, said cover is secu rely locked in place andcannot be removed. By this arrangement, it will be understood that it ispossible to gain access to the interior of the lock in order tcshift theposition of the block 4), for changing the combination, the manner ofperforming which I will now explain. The lock being opened, the faceplate of the casing is removed, and the block o is removed from thetooth of the tumbler on which it was previously set and placed uponanother, for example the second tooth above the opening E of the tumblerD next the removable cover plate. The cover is then applied to thecasing and the bolt shot, and the spindle T is given a few turns backand forth so as to set the combination.

When it is again desired to open the lock, the spindle T is given anumber of movements such number corresponding to the position in whichthe block 11 has been set upon the tumbler D. By these movements of theknob spindle it will be seen that the tumbler D is rotated tooth aftertooth, until the block 4) comes in contact with the spring hammer m,when the same is vibrated and the warning given by the gong of theposition of the parts. After this stroke of the gong G, the handle orspindle T is moved back and forth four times as the combination is setin Fig. 1, when the opening E will assume a position directly in therear of the bolt A as seen in said figure. When it is desired to setmore than one of the tumblers so as to arrange a combination havingseveral numbers, each of such tumblers should be provided with a tripperor block similar to the block 0 and adapted to engage the hammer m. Thegrooves or notches M on the inner or outer end of the spindle T serve toindicate to the operator the tumbler on which the said spindle is inposition to act. For if the spindle is withdrawn until its innermostnotch appears outside the casing which is as seen in Fig. 2, providedwith a tubular socket, it will be evident that said spindle is inposition to engage the outermost tumbler D, and if said spindle ispushed in to its fullest extent it is also evident that it is inposition to engage the innermost tumbler D. Thus several tumblers may beprovided with trippers set about various points of their peripheries andsaid tumblers maybe caused one after another to present their openings Ein line behind the bolt, whereby, when the combination is complete, thebolt may be withdrawn from its socket by a proper movement of thespindle, and the lock thereby opened.

Having thus described my invention, I 7

claim- 1. The combination with the casing, of a longitudinally movablebolt arranged therein and provided with a notch, a tumbler rotativelymounted in said casing behind said bolt, said tumbler having a toothedperiphery and an opening adapted to receive the tail of the bolt, andthe knob-spindle rotatively mounted in said casing, said spindle havinga finger adapted to engage the notch in the bolt and being also providedwith a pawl adapted to engage the teeth of said tumbler, substantiallyas set forth.

2. The combination with a casing, of alongi-tudinally movable boltarranged therein and provided with a notch, a tumbler, rota tivelymounted in said casing behind said bolt, said tumbler having a series ofperipheral teeth and being further provided with an opening adapted toreceive the tail of the bolt, a spindle rotatively mounted in thecasing, a finger mounted on the spindle and adapted to engage the notchin the bolt, and a spring pawl mounted on said spindle and adapted toengage the teeth of said tumbler, substantially as set forth.

3. The combination with a casing,ol:' a lougitudinally movable boltarranged "therein and provided with a notch, a tumbler rotativelymounted in said casing behind said bolt, said tumbler having a toothedperiphery and an opening to receive the tail of the bolt, a spindlerotatively mounted in the casing, a linger mounted on said spindle andadapted to engage the notch in the bolt,and a pawl mounted on saidspindle and adapted to engage the teeth of said tumbler, a trippermountedon said tumbler, a gong, and a hammer adapted to sound said gong,said hammer being arranged in the path of said tripper on the tumbler,substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JULES BOIS.

Witnesses:

XAVIER J ANICOT, JEAN GERMAIN.

